dmunozv04 commented on code in PR #45142:
URL: https://github.com/apache/superset/pull/45142#discussion_r4238371258


##########
superset-frontend/src/features/alerts/AlertReportModal.test.tsx:
##########
@@ -2221,6 +2226,481 @@ test('filter reappears in dropdown after clearing with 
X icon', async () => {
   );
 }, 45000);
 
+test.each(['older', 'latest'] as const)(
+  'overlapping filter requests preserve the latest selection when %s finishes 
first',
+  async firstToFinish => {
+    fetchMock.removeRoute(tabsEndpoint);
+    fetchMock.get(tabsEndpoint, tabsWithFilters, { name: tabsEndpoint });
+
+    type Response = {
+      json: { result: { data: { country: string }[] }[] };
+    };
+    let resolveOlder!: (response: Response) => void;
+    let resolveLatest!: (response: Response) => void;
+    const olderRequest = new Promise<Response>(resolve => {
+      resolveOlder = resolve;
+    });
+    const latestRequest = new Promise<Response>(resolve => {
+      resolveLatest = resolve;
+    });
+    mockGetChartDataRequest
+      .mockReturnValueOnce(olderRequest)
+      .mockReturnValueOnce(latestRequest);
+
+    render(<AlertReportModal {...generateMockedProps(true, true)} />, {
+      useRedux: true,
+    });
+    await userEvent.click(screen.getByTestId('contents-panel'));
+    await screen.findByText(/test dashboard/i);
+
+    const filterSelect = screen.getByRole('combobox', {
+      name: /select filter/i,
+    });
+    const valueSelect = screen.getByRole('combobox', {
+      name: /select value/i,
+    });
+    const selectCountry = async () => {
+      fireEvent.mouseDown(filterSelect);
+      await userEvent.click(await screen.findByText('Country Filter'));
+    };
+    await waitFor(() => expect(filterSelect).toBeEnabled());
+    await selectCountry();
+    await waitFor(() =>
+      expect(mockGetChartDataRequest).toHaveBeenCalledTimes(1),
+    );
+    expect(valueSelect).toBeDisabled();
+
+    const clearIcon = filterSelect
+      .closest('.ant-select')!
+      .querySelector('.ant-select-clear [aria-label="close-circle"]')!;
+    await userEvent.click(clearIcon);
+    await selectCountry();
+    await waitFor(() =>
+      expect(mockGetChartDataRequest).toHaveBeenCalledTimes(2),
+    );
+
+    const olderResponse: Response = {
+      json: { result: [{ data: [{ country: 'Stale country' }] }] },
+    };
+    const latestResponse: Response = {
+      json: { result: [{ data: [{ country: 'Latest country' }] }] },
+    };
+    if (firstToFinish === 'older') {
+      await act(async () => {
+        resolveOlder(olderResponse);
+        await olderRequest;
+      });
+      expect(valueSelect).toBeDisabled();
+      expect(
+        
valueSelect.closest('.ant-select')!.querySelector('[aria-busy="true"]'),
+      ).toBeInTheDocument();
+    }
+
+    await act(async () => {
+      resolveLatest(latestResponse);
+      await latestRequest;
+    });
+    await waitFor(() => expect(valueSelect).toBeEnabled());
+
+    if (firstToFinish === 'latest') {
+      await act(async () => {
+        resolveOlder(olderResponse);
+        await olderRequest;
+      });
+    }
+
+    fireEvent.mouseDown(valueSelect);
+    expect(await screen.findByText('Latest country')).toBeInTheDocument();
+    expect(screen.queryByText('Stale country')).not.toBeInTheDocument();
+    expect(
+      valueSelect.closest('.ant-select')!.querySelector('[aria-busy="true"]'),
+    ).not.toBeInTheDocument();
+  },
+);
+
+test('an older filter request rejection does not replace the latest options 
with an error', async () => {
+  fetchMock.removeRoute(tabsEndpoint);
+  fetchMock.get(tabsEndpoint, tabsWithFilters, { name: tabsEndpoint });
+
+  type Response = {
+    json: { result: { data: { country: string }[] }[] };
+  };
+  let rejectOlder!: (error: Error) => void;
+  let resolveLatest!: (response: Response) => void;
+  const olderRequest = new Promise<Response>((_, reject) => {
+    rejectOlder = reject;
+  });
+  const latestRequest = new Promise<Response>(resolve => {
+    resolveLatest = resolve;
+  });
+  mockGetChartDataRequest
+    .mockReturnValueOnce(olderRequest)
+    .mockReturnValueOnce(latestRequest);
+
+  render(<AlertReportModal {...generateMockedProps(true, true)} />, {
+    useRedux: true,
+  });
+  await userEvent.click(screen.getByTestId('contents-panel'));
+  await screen.findByText(/test dashboard/i);
+
+  const filterSelect = screen.getByRole('combobox', {
+    name: /select filter/i,
+  });
+  const valueSelect = screen.getByRole('combobox', {
+    name: /select value/i,
+  });
+  const selectCountry = async () => {
+    fireEvent.mouseDown(filterSelect);
+    await userEvent.click(await screen.findByText('Country Filter'));
+  };
+  await waitFor(() => expect(filterSelect).toBeEnabled());
+  await selectCountry();
+  await waitFor(() => 
expect(mockGetChartDataRequest).toHaveBeenCalledTimes(1));
+
+  const clearIcon = filterSelect
+    .closest('.ant-select')!
+    .querySelector('.ant-select-clear [aria-label="close-circle"]')!;
+  await userEvent.click(clearIcon);
+  await selectCountry();
+  await waitFor(() => 
expect(mockGetChartDataRequest).toHaveBeenCalledTimes(2));
+
+  await act(async () => {
+    resolveLatest({
+      json: { result: [{ data: [{ country: 'Latest country' }] }] },
+    });
+    await latestRequest;
+  });
+  await waitFor(() => expect(valueSelect).toBeEnabled());
+
+  await act(async () => {
+    rejectOlder(new Error('Older request failed'));
+    await olderRequest.catch(() => {});
+  });
+
+  fireEvent.mouseDown(valueSelect);
+  const latestCountryOption = await screen.findByText('Latest country');
+  expect(latestCountryOption).toBeInTheDocument();
+  await userEvent.click(latestCountryOption);
+  expect(screen.queryByText('Cannot load filter')).not.toBeInTheDocument();
+  expect(screen.queryByText('Network error')).not.toBeInTheDocument();
+});
+
+test('pending filter options follow the filter when an earlier row is 
deleted', async () => {
+  fetchMock.removeRoute(tabsEndpoint);
+  fetchMock.get(tabsEndpoint, tabsWithFilters, { name: tabsEndpoint });
+  let resolveCity!: (response: {
+    json: { result: { data: { city: string }[] }[] };
+  }) => void;
+  const cityRequest = new Promise<{
+    json: { result: { data: { city: string }[] }[] };
+  }>(resolve => {
+    resolveCity = resolve;
+  });
+  mockGetChartDataRequest
+    .mockResolvedValueOnce({
+      json: { result: [{ data: [{ country: 'US' }] }] },
+    })
+    .mockReturnValueOnce(cityRequest);
+
+  render(<AlertReportModal {...generateMockedProps(true, true)} />, {
+    useRedux: true,
+  });
+  await userEvent.click(screen.getByTestId('contents-panel'));
+  await screen.findByText(/test dashboard/i);
+  const countrySelect = screen.getByRole('combobox', {
+    name: /select filter/i,
+  });
+  await waitFor(() => expect(countrySelect).toBeEnabled());
+  fireEvent.mouseDown(countrySelect);
+  await userEvent.click(await screen.findByText('Country Filter'));
+  await waitFor(() =>
+    expect(
+      screen.getByRole('combobox', { name: /select value/i }),
+    ).toBeEnabled(),
+  );
+  await userEvent.click(screen.getByText(/apply another dashboard filter/i));
+  fireEvent.mouseDown(
+    screen.getAllByRole('combobox', { name: /select filter/i })[1],
+  );
+  const dropdowns = document.querySelectorAll('.ant-select-dropdown');
+  await userEvent.click(
+    await within(dropdowns[dropdowns.length - 1] as HTMLElement).findByText(
+      'City Filter',
+    ),
+  );
+  await waitFor(() => 
expect(mockGetChartDataRequest).toHaveBeenCalledTimes(2));
+  fireEvent.click(document.querySelectorAll('.filters-trashcan')[0]);
+  expect(
+    screen.getAllByRole('combobox', { name: /select filter/i }),
+  ).toHaveLength(1);
+  const valueSelect = screen.getByRole('combobox', { name: /select value/i });
+  expect(valueSelect).toBeDisabled();

Review Comment:
   Added the new test case and asserted `[aria-busy="true"]` after deletion. 
   Thanks for being so thorough, I wouldn't want to miss anything



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